JAGA TEMPO LST 500 X 600 TYPE 10 763W The horizontally lined front panel is simple and classic, and, as an LST (Low Surface Temperature) radiator, it is always safe to touch. The Tempo"s Low-H2O heating element is able to react to temperature changes quickly and efficiently, meaning that only the nominal amount of energy is used to heat any space. Tempo heaters are available in both wall-mounted and free standing options.